Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 3: Proportional Relationships; Model Quiz

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3.1 Representing Proportional Relationships

  • Question 1 (request help)

    Find the constant of proportionality for the table of values.

  • Question 2 (request help)

    Phil is riding his bike. He rides 25 miles in 2 hours, 37.5 miles in 3 hours, and 50 miles in 4 hours. Find the constant of proportionality and write an equation to describe the situation.

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3.2 Rate of Change and Slope

Find the slope of each line.

3.3 Interpreting the Unit Rate as Slope

  • Question 5 (request help)

    The distance Train A travels is represented by d = 70t, where d is the distance in kilometers and t is the time in hours. The distance Train B travels at various times is shown in the table. What is the unit rate of each train? Which train is going faster?


  Essential Question  

  • Question 6 (request help)

    What is the relationship among proportional relationships, lines, rates of change, and slope?

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